#!/bin/env python
# -*- coding:utf-8 -*-
' a est module '
__author__='Kangxiaoxiao'

import sys
def test():
	args=sys.argv
	if len(args)==1:
		print 'Hello,world!'
	elif len(args)==2:
		print 'Hello,%s!' % args[1]
	else:
		print 'Too many arguments!'
if __name__=='__main__':
	test()
